diff --git a/wifi_manager.py b/wifi_manager.py
index d16b10a..1bdfc11 100644
--- a/wifi_manager.py
+++ b/wifi_manager.py
@@ -7,6 +7,7 @@ import time
 import datetime
 import json
 from flask import Flask, render_template, request, redirect, url_for, make_response
+import socket
 
 try:
     from takway.board import OrangePi
@@ -54,12 +55,31 @@ def edit_line_in_file(file_path, search_string, replacement_string):
     except IOError as e:
         print(f"An error occurred: {e}")
 
+
+# 获取私有IP地址
+def save_local_ip():
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        s.connect(("8.8.8.8", 80))
+        local_ip = s.getsockname()[0]
+        s.close()
+        # save local_ip to file
+        with open('local_ip.txt', 'w') as f:
+            f.write(local_ip)
+        return local_ip
+    except Exception as e:
+        print(f"Error getting private IP: {e}")
+        return None
+
 app = Flask(__name__)
 
 def close_app():
     if led_enabled:
         orangepi.set_led_off('blue')
 
+    # 保存Wi-Fi IP地址
+    save_local_ip()
+    
     # 获取当前Flask应用程序的进程ID
     flask_pid = os.getpid()
 
@@ -224,13 +244,12 @@ def disconnect_wifi():
 
 def connect_saved_wifi(scaned_wifi_list):
     wifi_list = load_saved_wifi()
-    if not wifi_list:
+    if wifi_list == []:
         return False, None
     for wifi in wifi_list:
         if wifi['ssid'] in [item['ssid'] for item in scaned_wifi_list]:
             connect_wifi(wifi['ssid'], wifi['password'])
             return True, wifi['ssid']
-    return False, None
 
 def load_saved_wifi():
     try:
@@ -271,7 +290,7 @@ def submit():
     # 关闭热点
     close_hotspot()
 
-    time.sleep(3)
+    time.sleep(2)
     # 连接到用户选择的 Wi-Fi 网络
     if connect_wifi(ssid, password):
         close_app()